Indonesia / Central Java
Pantai Marina
Pantai Marina is a 504 m-long beach facing north, 6.1 km north-west of Semarang (Central Java, Indonesia). The sea averages 29.8 °C in May, its warmest month, and 28.5 °C in February; it stays at 21 °C or above all year.
Average sea surface temperature by month. Current month outlined.
![500px provided description: Taken in Semarang, Central Java, Indonesia. [#travel ,#sun ,#Beach ,#Sunset ,#Indonesia ,#Semarang ,#Blue Hour ,#Magic Hour]](https://thumb.wikimedia.org/wikipedia/commons/thumb/c/c1/Marina_Beach_Semarang_%28189955209%29.jpeg/960px-Marina_Beach_Semarang_%28189955209%29.jpeg)
Month by month
October at Pantai Marina
Beach-day index 8.4/10 · Indonesia median 8.3
| Measure | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea °C | 29.0 °C | 28.5 °C | 29.0 °C | 29.6 °C | 29.8 °C | 29.3 °C | 28.7 °C | 28.6 °C | 28.9 °C | 29.3 °C | 29.8 °C | 29.6 °C |
| High °C | 28° | 28° | 28° | 29° | 29° | 29° | 29° | 30° | 30° | 30° | 29° | 28° |
| Low °C | 27° | 26° | 27° | 27° | 27° | 26° | 25° | 25° | 26° | 27° | 27° | 27° |
| Rain mm | 382 | 360 | 225 | 200 | 139 | 90 | 47 | 26 | 54 | 114 | 205 | 294 |
| Cloud % | 92 | 91 | 85 | 80 | 67 | 58 | 51 | 45 | 48 | 66 | 84 | 94 |
| Wind m/s | 5.1 | 4.8 | 3.5 | 2.9 | 3.5 | 3.9 | 4.3 | 4.4 | 4.0 | 3.4 | 2.7 | 3.8 |
| Daylight h | 12.5 | 12.3 | 12.2 | 12.0 | 11.8 | 11.7 | 11.8 | 11.9 | 12.1 | 12.3 | 12.4 | 12.5 |
| Record high/low | 31°/25° | 30°/25° | 31°/25° | 31°/25° | 31°/25° | 31°/24° | 31°/23° | 32°/23° | 33°/24° | 33°/25° | 33°/25° | 31°/25° |
| Beach index | 6.9 | 7.0 | 7.3 | 7.6 | 8.2 | 8.7 | 9.1 | 9.3 | 9.1 | 8.4 | 7.5 | 7.1 |
Long-term monthly averages: air from NASA POWER (2001–2020), sea from NOAA OISST (1991–2020); records are the extremes of 2001–2020. How the index works.
When to go
The beach-day index peaks in July–September; August scores 9.3/10 with highs of 30 °C, sea at 28.6 °C and 26 mm of rain.
That matches the median for beaches in Indonesia in the same month.
At its warmest the water here is 1.1 °C warmer than the Indonesia median for May (28.7 °C).
Across the year the sea averages 29.2 °C, warmer than 99% of the coastal beaches in the atlas.
January is the wettest month (382 mm) and August the driest (26 mm); the yearly total is about 2,140 mm.
Daylight runs from 11.7 hours in June to 12.5 hours in December; in mid-August the sun rises at 05:46 and sets at 17:39 local time.
Orientation, sun and shore
The shore faces north (355°). Open water fills about 44% of the horizon close by, which makes it an open stretch of shore.
The sun sets over the sea in April–August; in mid-June it goes down at 17:30 local time on a bearing of 293°.
Sunrise is over the sea in May–July.
Straight out to the north about 500 km of open sea lies before the next coast, enough for large swells to build. The beach is on an island of about 127,926 km².
About 1 km offshore the sea is roughly 4 m deep and 8 m at 3 km, a shallow, gently shelving sea floor. Behind the beach the ground is about 1 m above sea level 500 m inland and 5 m at 1.5 km, a flat coastal plain.
Within 1 km, the land is 47% grassland, 22% built-up land and 17% tree cover (satellite land-cover map, 2021): a partly built-up setting. Water makes up 63% of that circle.
- Grass 47%
- Built 22%
- Tree 17%
- Crop 8%
- Wetland 4%
Land cover: ESA WorldCover 2021 (10 m). Orientation from OpenStreetMap land polygons sampled in 36 directions; depths and heights from the GEBCO 2020 grid (about 450 m cells), indicative only.
Rainfall reaches 382 mm in January and stays above 250 mm in January, February and December.
OpenStreetMap shows no lifeguard station within 1 km. Seasonal lifeguard posts are often unmapped, so check on site.
From above
Facilities within 1 km
- 3Restaurants, cafés & bars
- –Public toilets
- –Showers
- –Car parks
- –Lifeguard stations
- 1Hotels & guesthouses
- 1Pharmacies & clinics
Food and drink mapped within 1 km: 1 restaurant and 2 cafés. Accommodation: 1 hotel or guesthouse.
Counted within 1 km of the beach (bus stops 1.5 km) from OpenStreetMap features and Overture Maps places, release of 2026-10. Unmapped does not mean absent.
Getting there
| Airport | Code | Distance | Direction |
|---|---|---|---|
| Jenderal Ahmad Yani Airport Semarang | SRG | 3.2 km | south-west |
| Adisoemarmo International Airport Surakarta | SOC | 75.1 km | south-east |
| Adisutjipto International Airport Yogyakarta | JOG | 93.6 km | south |
Straight-line distances from the beach; road distance is usually 20–40% longer.
1 town or village of 1,000+ people lie within 10 km (about 1.7M residents); within 30 km there are 6 (about 1.9M).
Map
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Data on this page
- Air temperature, rain, cloud, wind, humidity: NASA POWER climatology 2001–2020, 0.5° grid.
- Sea temperature: NOAA OISST v2.1 monthly normals 1991–2020, nearest ocean cell 8.2 km away.
- Beach outline, surface, rules and public facilities: OpenStreetMap contributors (ODbL), feature w1428417764; restaurants, cafés, bars and lodging: Overture Maps places (CDLA-Permissive-2.0).
- Towns and time zone: GeoNames (CC BY 4.0). Airports: OurAirports (public domain). Sunrise and sunset: NOAA solar equations.
- Photos: Wikimedia Commons, author and licence under each image.
- Satellite view: Copernicus Sentinel-2 (ESA), scene S2B_49MDN_20240716_0_L2A.
- Orientation: OpenStreetMap land polygons (ODbL). Depth and terrain: GEBCO 2020 grid.
- Settlements: GeoNames places with 1,000+ inhabitants.
- Land cover: ESA WorldCover 2021, 10 m (CC BY 4.0).
- Search popularity: about 74K Google searches a month for the name (KeywordTool, October 2026).
Data compiled 2026-10-13. Something wrong? Report a data error.